9970666 has 8 divisors (see below), whose sum is σ = 15093540. Its totient is φ = 4939488.

The previous prime is 9970621. The next prime is 9970679. The reversal of 9970666 is 6660799.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9954025 + 16641 = 3155^2 + 129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22651 + ... + 23086.

Almost surely, 2^9970666 is an apocalyptic number.

9970666 is a deficient number, since it is larger than the sum of its proper divisors (5122874).

9970666 is a wasteful number, since it uses less digits than its factorization.

9970666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45848.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 9970666 is about 3157.6361411664. The cubic root of 9970666 is about 215.2326020589.

The spelling of 9970666 in words is "nine million, nine hundred seventy thousand, six hundred sixty-six".